I often do. For armor you kinda have to, since that doesn't fit any other ship, but also the other stuff if the ship isn't an absolute turd in jump range and/or fuel tank/scoop size. I have most blueprints I use pinned though, and quite a few engineers can apply experimentals to different modules, even if they don't have max engineering level on them, so the amount of engineers I actually need to visit is relatively low. And other times I simply jump my carrier to all the engineers I need.